simple python-example-90 (snippet)

Python example 'python-example-90'

python-example-90

Python example: python-example-90

#!/usr/bin/python
# -*- coding: UTF-8 -*-

#list  
#新建列表  
testList=[10086,'中国移动',[1,2,4,5]]  

#访问列表长度  
print(len(testList)  )
#到列表结尾  
print(testList[1:]  )
#向列表添加元素  
testList.append('i\'m new here!')  

print(len(testList)  )
print(testList[-1]  )
#弹出列表的最后一个元素  
print(testList.pop(1)  )
print(len(testList)  )
print(testList  )
#list comprehension  
#后面有介绍，暂时掠过  
matrix = [[1, 2, 3],  
[4, 5, 6],  
[7, 8, 9]]  
print(matrix  )
print(matrix[1]  )
col2 = [row[1] for row in matrix]#get a  column from a matrix  
print(col2  )
col2even = [row[1] for row in matrix if  row[1] % 2 == 0]#filter odd item  
print(col2even  )

Useful links

• Learn Python: https://pythonbasics.org/
• More Python: https://pythonprogramminglanguage.com